Jack.



P. s KIMBALL.

JACK- APPLICATION FILED DEC-16,1916.

Patented May15, 1917.

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PHILIP SWETT KIMBALL, OF MILFORD, MASSACHUSETTS.

JACK.

Specification of Letters Patent.

Patented May 115, 1911?.

Application filed, December '16, 1916. Serial No. 137,279.

To all whom it may concern:

Be it known that I, PHILIP S. KIMBALL, a citizen of the United Statesfresidingat Milford, in the county of Worcester and State of Massachusetts, have invented an Improvement in Jacks, of which the following is a specification.

This invention relates to extension operating handles for jacks of the type described and claimed in my application filed May 22,

v I 1915, Serial No.-29,891.

I therefore, the

.of the extensible form It is desirable,

may be completely for convenient storage, .and adapted to be The jack of the said application is of the screw type, wherein the lifting element is threaded for cooperation with eared connections, in turn rotated through a handle. In the structure referred to the handle Was relation .of its tubularcomponent sections. however, to provide a handle of greater operating strength in rotary movement than such hollow collapsible handle, and to further construct the handle in such manner'that its extensible elements separated from the jack folded into compact form.

-The object of the present invention is, provision of a separable, fold able, handle for such jack, or any other jack with which it may be used, adapted for 'pivotal connection with the gear connections thereof.

spectively,

which members are'or may be pivotally connected to the end of one of the sections'and adapted to be brought into parallel relation therewith when out of use and tobe swung outward into angular position with respect thereto when in use.

In the drawings Figure 1 is a side elevation of a jack hav-,

ing, a handle embodying this invention.

"Fig. 2 is a longitudinal sectional view of the permanent section.

Figs. 3 and 4 areplan and side views, reof the extension element removed,

through telescopic conveniently store being adapted to be its free end being formed to offset lug 15, engaging when the Fig. 5 is a transverse section taken on the line 55, Fig. 4. l

The jack, indicated generally at 1, is here shown of the type illustrated in the application before referred to, includes as the only necessary adjunct for the purpose of the present invention, a permanent jackhandle section 2, adapted to be rotated in the operation of the jack. Such section 2 is preferably'pivotally mounted at the jackend, as at 3, and temporarily held in extended relation through a ball-and-socket lock 4, asshown in Fig. 2.

An extension element is adapted for de tachable connection with the permanent .handle section 2, preferably by a sliding joint and to be held by a spring locking element. Said extension element, as here shown, comprises a plurality of sections, two

being shown at 5 and 6. The sections 5 and 6. are pivotally connected at their meeting ends, through a pivot structure involving a lug 7, projecting from one section fitted between ears 8 formed on the other section Both the lug and ears are laterally enlarged,

as at 9, to permit the pivot-pin 10 to center beyond the longitudinal planes of the similar surfaces of the sections when extended. By reason of the relatively oflset pivot, the sections may fold tially parallel relation, for providing a compact, comparativeiiy short structure, very inrestricted areas, as the usual automobile tool-box. The sections at the inner terminals of the lug and ears are formed to present abrupt or square ends or portions 11, 11, adapted to engage, when the sections are extended and limit the opening movement to alined positions of such sections. p

The free end 12 of one section, as 5, is of non-circular cross-section, and isadapted to fit into a correspondingly shaped and sized socket 13 of the jack-handle section 2.

lock is provided to secure such connection against accidental separation, being shown as preferably comprisinga leaf spring .14, secured to the. section .5, such spring, near present an handle is in place in an annular recess 16 in the section 2. The resiliency of the spring maintains the into parallel or substanlook, while at the same time such form of 1001: will additionally serve to advise the user when the sections have been properly coupled. i

The free end of the section 6 has laterally extended lugs 17 to which are pivotally connected short hand-bars or grips 18. grips are preferably ears 19, arranged wholly to one side of the longitudinal medium plane of the grip, and

, .tioned to permit such ears are arranged respectively on opposite sides of the lugs 17 of the section 6. The lugs 17 are in a plane of the pivot-pin 10 of the sections to avoid interference in folding,

and posi- 7 ed, as they are adapted to be when not in use, to lie 1n the general direction of and but slightly beyond the handle sections, see

inconveniences attending the use of the ordinary jack. The inconveniences noted are avoided inno small degree by the capability of the present handle as a means practically rigid in one relation, of positioning the jack or removing it from beneath the car, without necessity of the usual direct hand application. 4 I

The section5 may have a lug 20, adjacent its free end, for convenience in driving such -handle from the jack-handle section 2, if

necessary.

I claim .1. An extension handle for screw jacks comprising sections having complementary flat interlocking end-portions carried by said The formed withterminaleach end-portion plane parallel to the the hand grips, when foldtary motion from one section mamas section, a pivotal connection between said end portions offset from and at right angles to the axial line of the sections, whereby the sections may be closely folded together, having a square end face and a square shoulder disposed on opposite I sides of the pivotal connection, the end face and shoulder of the end portion of one section being adapted to engage a shoulder and end face respectively of the end portion of the other section to limit the movements of said sections in one direction to a substantially alined position, said complementary end portions, when said faces and shoulders are in engagement, serving to transmit a roto the other,

and grip members carried .by'one section.

2. An extension handle for screw jacks comprising two sections, complementary. interlocking end-portions carried by said sections, a pivotal connectioii between said end. portions offset from and at right angles to j theaxial line of the sections, whereby said sections may be closely folded together, square end-faces-and shoulders disposed on said end portion on opposite sides of the pivotal connection, adapted for engagement to limit the angularmovement,of'the sections in one direction, and pivotally supported hand grips carried by the free terminal of the other section, the pivots of the hand grips being permanently perpendicular to the pivot of the sections to permit the section and hand grips to be folded into compact relation without interference.

In testimony whereof, Ihave signed my name to this specification, in the presence of two subscribing. witnesses.

PHILIP SWETT KIMBALL.

' Witnesses:

CLIFFORD D.

Coon, EFFIE A.

NELSON. 

